Side bearing.



w. A. BooK.'

SIDE BEARING.

APPucATloN FILED AUG.20. 1911.

1,290,059. r Patented Jan. 7,1919. ng!

ATTO. EY

,l side heat-ings;

UNITED s'rAs PATENT oFFIoE.

WILLIAM A. BOOK, O11" CHICAGO, ILLINOIS, ASSIGNOB T0 WILLIAM 'H. MINER, 0F

CHAZY, NEW YORK.

SIDE BEARING.

Specication of Letters Patent.

Patented Jan. 1919.

Application tiled August 20, 1917. Serial No. 187,200.

To au whom it may concern:

lic it' known that I, WILLIA A. Boex, a citizen of the United States, residing at Chicago, in the county of Cook and State ot Illinois, have invented a certain new and useful Improvement in Side' Bearings, of which the/following is a full, clear, concise, and exact description, referencelbcing had to theaccoinpanying drawings, forming a partloiftliifspecication.

' ,',ilhjsimrcntion relates to improvements in ,'fl ;bjectbf the invention is to provide 'inria '1.l rlctlon roller side bearing more lf-poiric'uiarly adapted for railway cars wherein the anti-friction element travels on a curved track, the center of curvature of which corresponds tothe center of the pivoted car bolsters, l having provision also for a tilting movement to thereby insure proper contactwhetween the partsl at all times.

InltheA drawing forming apart of this specification, Figure 1 is a top plan view 01 a side bearing illustrating my improvements, part of the view being shown in section, the section corresponding to the line 1-1 of Fig. 2. Fig. 2 is a vertical, sectional view taken substantially on the line 2-2 of Fig. 1. And Fig. 3 is a detail plan view of the controller arm. ln said drawings, 10 denotes the top portion of a truck bolster to which my improved side bearing is preferably attached. The side hearing, as show n, comprises a main or hase casting A havlng lugs 11.-11

`at the cOrnersthereOt by which it 1s riveted to the truck bolster; a curved .track 12- standing concentric curved guide wali land 14; an upwardly offset housing 15; an

ups 13 anti-friction roller and a spring D.

As clearly appears B; a controller arm C;

from the drawing, tho

track 12 is curved on a radius correspond,

ing to the distance from said traekto the center of the bolsters between which the side bearing-` is placed. At its ends, the track 12 provided with upstanding walls 16-16 by which 'the movements of the roller are lim-L ited. As more clearly appearsl from Fig. 2, the track 12 is provided at its center with a rib 17 having an upper convex surface and at either side of said rib, the track is beveled downwardly, as indicated at 18-18. The antifriction roller B, which is of trunthe anti-friction element ing.

cated conical form in order to insure proper may tilt is limited by engagement of the end portions of the roller B with either of said A l With this arrangement, it is obvious that the r'oller may accommodate itself to the hearing surface 20 of the body bolster regardless of the angle between the of the truck and body holsters. The hou's ing 15, as shown, has an upper wall 2 1, lower wall 22, back walls 23-23 and curved side walls 24-24.- The controller arm C is pivotally mounted within said housingl as y means of the rivet 25. Said' controller arm C is provided at its outer or tree end with an ellipsoidal shaped portion 26 which is extended within a corresponding recess 27 on the interior of the roller B. Said recess 27 is made of such a shape and size as to permit the necessary tilting of the roller with respect to 'the controller arm and the curvature of the interior surface of the roller and the portion 26 of the conshaped walls 28-28 connected at their extreme ends by vertical portions 29-29. Said walls 28 are made concentric with the pivotal axis of the arm C and are adapted to have seated therewithin said spring D. The spring D is provided at its ends with ollowers 30--30 which normally engage upstanding portions 31-31 of thebase cast- On their outer faces, the followers 30 surfaces are provided with projections B2 which sgat within corresponding` recesses 38 on the 1nner sides of the vertical'portions 29 of the controller arm.

T he normal position of the parts is as* shown in the drawing. When the truck bolster swings with respect to the body bolster and pressure is exerted on the roller,

it is obvious that the latter will roll bodilyto one side of its central normal posltion.

This action will cause the oscillation of the controller arm C which will move one of the followers toward the opposlte follower,

thus compressi-ng the spring D. Upon release of the pressure fromjthe roller B, the spring D 'will expand and return the arm C to central position and the arm in turn will return the roller.

With the arrangement herein described, it is obvious that propercont-act between the roller and its adjacent parts is always obtained and in the returning action of the controller arm, tendency to twist theroller is` minimized.

I claim:

1. In a side bearing l for cars adapted to be placed between two pivotally connected v holsters, the combination with a mem-ber havroller to tilt in any vertical plane passing through a radius of said curved track.`

2. In a side bearIn-g'for railway cars, the

combination with a base casting having a curved` roller track, of azroller mounted on said track, a controller arm pivoted to said base casting and having'its free end extendg the roller. a spring-controlled arm extending within said roller and adapted to return the latter to normal position after each actuation thereof, said roller being rotatable and tiltable with respect to said arm.

4. In a roller side bearing, the combination with a base member having a curved track, said track being provided with a central rib and oppositely and downwardly beveled. surfaceson either side of the rib, o a truncated conical roller, said roller having a circumferential groove coperable with said rib for thereby adapting the roller to tilt in addition to its rolling movement, and means for automatically returning the roller to normal position after each actuation thereof.

In witness that I claim the foregoing I have hereunto subscribed my name this 29th day of July 1917.

WILLIAM A. BOOK. 

